Valve for hydraulic engines or machinery.



Y A. PATTERSUN'. VALVE POR HYDRAULIC ENGINES 0R MAOHINBRY'S APPLICATION FILED MAB.. 30. 1903.

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No. 738.730. 4 PATENTED SEPT. 8A', 1903.

A. PATTERSON.

VALVE FOR HYDRAULIC ENGINESOR MACHINERY. APPLIUATION FILED' MAR. ao. 1903. No Monm.. 2 sHBnTs-sHIzBT 2.

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PATENT OFFICE.

` ANTHONY PATTERSON, OE OAEDIEF, ENGLAND.

VALVE FOR HYDRAULIC ENGINES OR MACHINERY..

SPECIFCATION forming` part f Letters Patent No. 738,730, dated September 8, 1903.

Original application filed May 13J 1902, Serial No. 107,175. Divided and this application iiled March 30, 1908. Serial No.l50,298. (No model.)

To @ZZ whom t may concern:

Beit known that I, ANTHONY PATTERSON, a subject of the King of Great Britain, residing at Cardii, inthe county of Glamorgan,Wales, England, have invented certain new and usefullxnpro vements in Valves for Hydraulic Engines andMachinery, (Case 13;) and I do hereby declare the following to be a full, clear, and Yexact description ofthe invention, such as will enable others skilled in the art towhich it appertains to make and use the same.

Myinvention relates to valves for hydraulic Vengines and for hydraulic machinery. By

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my im provements-such valves are of increased efficiency because they are more completely water-tight. They are more thoroughly balanced, and hence the wear and tear in them is reduced, and they are actuated with greater" ease and expeditionand are under more complete control. They are suitablefor very high water-pressures. to shocks and consequent injury to themselvesV and the engines or machines in connection with which they are fitted and in the operation of which they are employed.

This application is a division of my former application, Serial No. 107,175, filed May 13, .1902.

. In the accompanying drawings, Figure l is a longitudinal central section of a valve constructed in accordance with my invention.

-This form of valveis a double starting orregulating valve for use in connection with reversing-engines or with a hydraulic cylinder to both sides ofthe piston of which water is admitted or withcoupled rams and in similar cases. Fig; 2 is a longitudinal cen` tral section taken atright angles to the section shown in Fig. 1. Fig. 3 is a vertical cross-section of the same on the line E F of Fig. 1, and Fig. 4 is a vertical section on the line G H of Fig. 2.

The valve has two throats b. and c, which extend in oppositedirections from the conical centerpiece o, `being made integrally therewith. These throats are hollow, and the ends thereof are closed by plugs w, which are inserted after 'casting to fill apertures left for convenience in casting.

At the outer end of the throat b is a coupling-box d, through which the inlet-pipe d Thevalves are lessliable couplingbox is fitted on the outer endof the'4 throat o, at which point a stuffing-box is also provided held in place by the bolts 2. By

branches extending from the coupling-boxes the water supply and discharge pipes are connected to the valve at right angles to the "axis thereof. The disposition of the supply and exhaust apertures at right angles to the axis of the valve causes a reduction of the shock.

The throats b and c are unitedby the center piece a, made integrally therewith. `This center piece is conicalin shape to facilitate the easy assemblage of the parts. In this center piece are three. water-passages f, g, and h, the passage f being approximately in the center of the center piece a, as shown in Fig. 3. This passage has a portf at one end thereof and a port f2 at the other end. The passage g has a port g' and the passage h has a port h.

The center piece a is surrounded by a casing t, also made conical, which has branches i' and i2, by which communication is estab lished with the engine.

AIn the casing are two water-passages j `and 7a. The passage j has `two ports j and jfl, and the passage 7.: has two ports lcand k2.

The valve is iitted with stufing-hoxes Z, in which there are colnpressible` or` yielding packings, such as hemp packing` or the like, and by the use ot' the stufIing-box thus packed the valve can be kept water-tight bytighten- .ing up the gland, which can be done with great nicety.' Bolts 3 4. unite the central valve-casing with the coupling-boxes located at either end of the valve.

n represents the lever for stopping, starting, and reversing the engine. It worksover a segment 5, having end pieces and 7 and a slot 8. A pin 9 slides in a guide -10`on'said lever, and the handle 11,'pivoted to saidpin and said lever, serves to draw it away from the segment when it is desired to shift the valve.

A spring 12, attached to the handle 11, normally holds the pin 10 down against the l ways the water-exhaust throat, and the throat b is always the water-supply throat, and this condition does not alter with the changes in the direction in which the engine is running.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. A double-acting starting or regulating valve for use in connection with reversing-engines, consisting of a center piece having two long throats secured thereto, said center piece being provided with three passages, in combination with a casing surrounding said center piece and provided with passages and ports, supply and exhaust pipes connected at the ends of the valve respectively and located at right angles thereto, means for moving said valve and coupling-boxes independent of the central casing and receiving the ends of thev supply and exhaust pipes, substantially as described. v l

2. A double-acting starting or reversing valve for use in connection with hydraulic engines, consisting of a conical center piece provided with three water-passages, long holconnected at-the ends of said valve at right angles thereto, a hand-lever for operating said valve, means for retaining said handlever in position andcoupling-boxes independent of the central casing and receiving the ends of the supply and exhaust pipes, substantially as described.

3. A double-acting starting or regulating valve for use in connection with hydraulic engines, consisting of a conical center piece provided with three passages, two long throats oppositely arranged connected to said center piece in combination with a conical casing provided with passages and ports surrounding said center piece, supply and exhaust Vpipes connected at'the ends lof said valve'at right angles to its axis, stufling-boxes, a handlever for operating said valve, said hand-lever being. provided with branches connected to the two throats of said valve, means for holding said valve in position, and means for securing the parts together, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses. p

ANTHONY PATTERSON. Witnesses:

CLARA EMILY WAKEFORD, STANLEY RALPH PATTERSON. 

